Infinite loop when installing Flatpak SDK extension
I have the following in a flatpak manifest:
"sdk-extensions": [ "org.freedesktop.Sdk.Extension.rust-stable//20.04" ],
Opening this project with Builder correctly determines that the extension needs to be installed, and asks me to confirm installing it. The extension seems to download correctly, but the installation fails ("Failed to install runtime") and once it's failed, it immediately asks me to install it again and repeats the whole process. There doesn't seem to be a way to see the reason for the failure, the build output pane is empty.